I'm looking for good instructions for checking and setting the Ip timing on a 1983 240d with a 616 912 engine 287k. the hanes manual shows a different model injection pump. It seems most of the DIY articles are for the 617 turbo or others.Does anyone has specifics for this engine or know the article links for it. Do I have to remove the delivery valve and spring? do I need the spline tool to remove them. It does not look like the injection pump I have in the picture. By the way I just replaced the timing chain ,guides, adjusted valve lash and replaced fuel filters and primer pump. it runs much better since the chain replacement , but it smokes heavily of diesel at idle . a fuel smelling blue white smoke. the engine runs strong and smooth on the highway. no obvious misfireing and no obvious smoke, but at idle it runs rough and smokes. I've noticed that when I loosen the no. 4 injector pipe at 800 rpm idle the smoking seems to lessen and not much change in engine function, but when i loosen no 4 injector at approx. 1000 rpm it makes a huge difference in engine function. It bogs down a lot. I havnt checked the compression I figured it was o-k since it runs so well on the highway and starts easily It likes to go 75 on the highway and burns little oil 1/4 quart on 500 miles. please help thank you. Chris